JP4743774B2 - Clamp-type cable detention method and its equipment - Google Patents

Description

  The present invention is an existing band of a power distribution department that exists innumerably in existing co-posts, for example, a communication cable using a retaining pole band, a power distribution band, etc., for example, a drop cable for FTTH The present invention relates to a pinch-type cable detention method and an apparatus therefor.

  Accelerating supply services in FTTH's telecommunications business is an issue.

To hold and fix an optical drop cable K for FTTH, which is a communication cable, for example, as shown in FIG. A character-shaped hook fitting 101 is used.

  That is, in the retaining column band 100, the middle portions of the pair of left and right strips are separated from each other, and a plurality of holes are provided at equal intervals along the respective longitudinal directions. Then, the retaining pole band 100 is wound around the utility pole P, and is slid so as to have an appropriate length in a state where the separated portions of the strip are overlapped with each other. Further, after inserting into a hole formed on one end side of the L-shaped piece of the hook metal fitting 101, it is fixed by tightening with a nut from the opposite side.

  At this time, the other end side of the L-shaped piece of the hook metal fitting 101 protrudes outward with respect to the utility pole P. Then, the FTTH drop cable K is fastened and fixed to the substantially U-shaped hook arm 102 provided on the other end side of the L-shaped piece.

  The specific configuration of the above-described optical drop cable K for FTTH is such that a support wire having a large diameter of about 2 mm to 3.3 mm and a main body cable are covered with a sheath, and this main body cable includes a plurality of optical fibers. The upper and lower sides of the element wire are supported by a tension member via a sheath.

Moreover, the round cable which is a security communication line is an optical cable formed in a diameter of about 14 mm to 30 mm in which a cylindrical slot rod is covered with, for example, a flame retardant polyethylene sheath. A tension member is built in the central portion of the slot rod, and, for example, four cores are attached at equal intervals around the tension member.
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  However, in the past, there was a limit to the number of retractable strips of the optical drop cable K for FTTH for reasons of structure and strength.

  For example, when the number of retraction possible is up to 3, since the 4th and subsequent pieces need to be laid on the messenger side, as shown in FIG. It is replaced with a carrying-out column band 103 provided with a substantially U-shaped hook arm 106 disposed laterally from the upper end of the hook metal fitting 105, or this carrying-out column band 103 is added. It's real.

  Further, when a round cable is laid in the section of only the optical drop cable K, it is necessary to replace it with the carry-out column band 103 in the same manner.

  Moreover, the carrying-out column band 103 itself has a problem that it is very expensive because it uses a free band adopted in the electronic communication department.

  Therefore, the present invention was created in view of various circumstances existing in the past, such as when adding an optical drop cable, without removing the existing retaining column band or even when removing it. It is an object of the present invention to provide a pinch type cable type anchoring method and its apparatus that can easily attach a messenger wire for a round cable and can also use an existing distribution band in place of a retaining pole band. And

The present invention is a pinching type cable retaining method for fixing a cable attached to a utility pole, and a cable retaining tool is inserted into a band attached to the utility pole or an existing attached band, and the strip is substantially L-shaped. The upper part of the cable retainer which is bent in the shape of the upper and lower ends of the vertical portion and has two upper and lower locking pieces corresponding to the vertical width of the band. place the right and left engagement pieces formed in to engage the upper end of the band, by tightening the band locking pieces of the left and right that are formed on the lower side is engaged with the lower end of the band, the horizontal portion Fixing the cable retainer protruding from the tip of the hook arm for retaining and fixing the cable to the hole provided at the tip of the cable ; and
A rectangular plate piece is bent into a substantially L shape, a bolt insertion hole is provided in the vertical portion, and a tip portion of the horizontal portion is bent upward, and a groove portion is formed at the tip portion. Install a jig consisting of L-shaped bolts and nuts, and attach the cable fixing bracket (round cable pull-through bracket) that has a hanging part for hanging the messenger wire to face the cable retainer. And apply from the outside of the band,
Insert the bolt attached to the band into the bolt insertion hole of the cable fixing bracket (round cable passage bracket) and screw the nut into the cable retainer to fix the cable fixing bracket (round cable passage bracket). The process of putting the band between the cable retainer and the cable fixing bracket (round cable pull-through bracket),
The cable retainer can retain the strength of the cable retainer in the process of securing the cable with the allowable number of fixing strips that can maintain the strength, and the hanging part of the cable fixing bracket (circular cable pulling bracket). By having a step of fixing a fixed number of cables using a messenger wire , the above-described problems have been solved.

  Furthermore, the cable is fixed to the hanging part of the cable fixing bracket (circular cable fitting) by a process of hanging the messenger wire on the hanging part, and the cable is stretched on the messenger wire via the spiral hanger. The problem mentioned above was solved by including a process.

On the other hand, the present invention is a pinching type cable tensioning device for fixing a cable attached to a power pole, and is a band attached to a power pole, or a cable tensioner inserted inside an existing band , and a cable tensioning device Cable fixing brackets (round cable pull-through brackets) that are fixed by being applied from the outside of the band so as to face the cable, and the cable retainer bends the strip in a substantially L shape, A pair of upper and lower locking pieces having a vertical distance equivalent to the vertical width of the band protrudes from the left and right ends of the hook. Bo but protrudes cable clamp (round cable drawing-and fittings) are, by bending a plate piece rectangular shape in a substantially L shape, which the bolt insertion hole provided in the vertical portion, is attached to the band By screwing the nut to insert the door, it is fixed to the cable anchor member, a groove formed in a portion formed by bending the distal end portion of the horizontal portion upward by hung messenger wire with bolts and nuts, as well Solved the problem mentioned above.

  In addition, the cable retainer extends a locking piece over the entire joining portion of the vertical portion and the horizontal portion, and this locking piece has a wedge-shaped protrusion facing downward. Solved.

  Furthermore, the cable fixing metal fitting (round cable fitting) is formed by bending both ends in the longitudinal direction of the rectangular plate piece slightly downward and bending the entire plate piece into a substantially L shape. The problem mentioned above was also solved.

  In addition, the cable fixing bracket (circular cable fitting) is formed by bending the tip portion of the horizontal portion upward, forming a groove portion at the tip portion, and forming the groove portion with an L-shaped bolt and nut. The problem mentioned above was solved by attaching the implement and providing the hanging part for hanging the messenger wire.

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  According to the present invention, it is possible to easily attach a messenger wire for a round cable without removing the existing cable pole band for removal when the cable is added or for removal. The existing distribution band can be used instead of the pillar band, which has made it possible to reduce material costs and shorten the construction period.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  As shown in FIGS. 1 to 3, the sandwiching cable retaining device according to the present invention is a plurality of communication cables in a range where strength can be maintained, for example, a cable retaining device 2 for retaining and fixing an optical drop cable K. And a device body provided with a cable fixing bracket (circular cable fitting) 3 for hooking a messenger wire M for tensioning an optical drop cable K that cannot be sufficiently strong through the spiral hanger S 1 in general.

  In addition, in order to make the explanation easy to understand, the cable retainer 2 is configured to retain and fix the three optical drop cables K as a range in which the strength can be maintained. Further, the cable fixing metal fitting (round cable pulling metal fitting) 3 is used to hang a messenger wire M that stretches the optical drop cable K after the fourth communication cable. Of course, the number of stripes is an example, and the present invention is not limited to this number of stripes.

  And this apparatus main body 1 is attached so that it may pinch | pinch the staying pole-and-distribution band 4 without removing the existing pole-and-distribution band / distribution band 4 currently fastened and fixed to the pole P.

  As shown in FIG. 1 to FIG. 3, the anchoring pole band / distribution band 4 has a pair of front and rear strips 4a, 4b having a substantially semicircular arc shape facing each other, and the utility pole P is placed on the strip 4a. , 4b, and the ends thereof are fastened and fixed with bolts 7 and nuts 8.

  A substantially rectangular recess 5 is formed in the center of both strips 4a and 4b. The recess 5 is recessed from the inside to the outside. Then, the bolt 7 is inserted from the inside into the mounting hole 6 drilled in the center of the recess 5 and the bolt head is disposed in the recess 5, and only the tip of the bolt is between the two strips 4 a and 4 b. It protrudes outward.

  A scaffolding step band 9 is attached to substantially the center of the rear side strip 4b opposite to the front side strip 4a to which the apparatus main body 1 is attached.

  When attaching the retaining pole band / distribution band 4 to the utility pole P, the two strips 4a and 4b are left in a state where the bolts 7 and nuts 8 are removed and the utility pole P is held together. After closing, both ends of the strips 4a and 4b are tightened again with the bolts 7 and nuts 8 so that the retaining column band / distribution band 4 is firmly fixed to the utility pole P.

  The cable retainer 2 is sandwiched and fixed between the utility pole P and the retention pole band / distribution band 4 in the retention pole band / distribution band 4 attached to the utility pole P.

  As shown in FIGS. 6 and 7, the cable retainer 2 is formed by bending the strip into a substantially horizontal L-shape and projecting four locking pieces 10 at the left and right ends of the vertical portion. . There are two locking pieces 10 on the upper side and two on the lower side. The locking pieces 10 have a vertical distance corresponding to the vertical width of the retaining column band / distribution band 4.

  A hole 11 is provided at the tip of the horizontal portion of the cable retainer 2. A hook arm 12 for securing and fixing the optical drop cable K is disposed in the hole 11. Since the base end portion of the hook arm 12 is fixed substantially at the center of the lower surface of the horizontal portion, and the tip end of the hook arm 12 formed in a substantially U shape is disposed so as to protrude from below into the hole portion 11. is there.

  FIGS. 8 and 9 show another embodiment of the cable retainer 2. In the cable retainer 2, the strip is bent in a substantially horizontal L shape, and the locking piece 10 is extended over the entire joining portion of the vertical portion and the horizontal portion. This locking piece 10 is provided with an arc recess 13 at the center. Further, a wedge-shaped protrusion 14 is provided so as to protrude downward adjacent to the arc recess 13, thereby strengthening the engagement with the retaining column band / distribution band 4.

  When the cable retainer 2 is inserted into the inside of the retaining column band / distribution band 4 from above, first, the protrusion 14 of the upper locking piece 10 is inserted into the upper end of the retaining column band / distribution band 4. After that, each of the left and right locking pieces 10 on the lower side is engaged with the lower end of the retaining column band / distribution band 4.

  The cable fixing bracket (one push-pull bracket required for a round cable) 3 is fixed to the printing column band / distribution band 4 attached to the utility pole p via bolts 7 arranged on the retention column band / distribution band 4. It is.

  As shown in FIG. 4 and FIG. 5, the cable fixing bracket (round cable pull-through bracket) 3 has its both ends in the longitudinal direction curved slightly downward so that the entire plate piece is substantially L-shaped. It is bent into a shape. In addition, a bolt insertion hole 15 is provided in a vertical portion of the cable fixing bracket (round cable passage bracket) 3. The bolt insertion hole 15 is for inserting the tip of the bolt 7 disposed in the recess 5 of the retaining column band / distribution band 4.

  In addition, the tip of the horizontal portion of the cable fixing bracket (round cable passage fitting) 3 is bent upward. A long groove 16 is formed at the center of the bent tip. By attaching a jig composed of an L-shaped bolt 17 and a nut 18 to the groove portion 16, a messenger wire M for laying the optical drop cable K for the fourth and subsequent communication cables is hung through the spiral hanger S. A hanging portion 19 is formed.

  In this hanging portion 19, a jig composed of an L-shaped bolt 17 and a nut 18 can be freely attached and detached. For example, the jig 16 can be easily obtained by sandwiching the groove 16 of the cable fixing bracket (round cable passage fitting) 3 with a washer and a nut 18 arranged on an L-shaped bolt 17 and tightening the nut 18 in this state. Can be attached.

  Next, an example of use / assembly of the present invention configured as described above will be described.

  It is assumed that the retaining pole band / distribution band 4 is attached to the utility pole P in a state where the bolt 7 is inserted into the attachment hole 6 of the band 4 in advance.

  First, as shown in FIG. 1, with the retaining pole band / distribution band 4 attached to the utility pole P, the bolts 7 and nuts 8 are slightly loosened, and the retaining pillar band / distribution band 4 and utility pole P are loosened. Create a gap between them. Then, the cable retainer 2 is inserted into the gap from above, and the upper and lower locking pieces 10 are engaged with the upper ends of the holding column band / distribution band 4, and the lower left and right locking pieces. 10 is engaged with the lower end of the retaining pole band / distribution band 4.

  At this time, the bolt 7 is disposed in the recess 5 of the retaining column band / distribution band 4 and the tip of the bolt 7 is protruded. In this state, the retaining pole band / distribution band 4 is firmly fixed to the utility pole P.

  Next, as shown in FIG. 2, the cable fixing bracket (round cable pulling bracket) is provided from the outside of the retaining pole band / distribution band 4 so as to match the inside of the four locking pieces 10 of the cable retainer 2. ) Apply 3

  At this time, the bolt 7 is inserted into the bolt insertion hole 15 of the cable fixing bracket (round cable passage fitting) 3 and the nut 8 is screwed in from the opposite side, so that the cable fixing bracket (round cable passage fitting) 3 is attached. Fix it. In other words, the cable holding device 2 and the cable fixing metal fitting (round cable drawing metal fitting) 3 sandwich the holding column band / distribution band 4 and the whole is fixed.

  Then, as shown in FIG. 3, the optical drop cable K of the three communication cables is retained and fixed to the hook arm 12 of the cable retainer 2. Further, the messenger wire M is hung on the hanging portion 19 of the cable fixing bracket (round cable passage fitting) 3. Further, the optical drop cable K after the fourth communication cable is stretched on the messenger wire M through the spiral hanger S.

  The pinch-type cable detention method and its apparatus according to the present invention can be widely used as various power distribution methods for fixing communication cables using existing bands of the power distribution department that exist innumerably on existing co-posts. Is.

FIG. 3 is a perspective view showing a state in which a cable retainer is inserted and fixed between a retaining pole band / distribution band and a utility pole in the sandwiching cable retaining device according to the present invention. It is a perspective view which shows the state which attaches a cable fixing metal fitting (circular cable through metal fittings) to the cable cable holding fixture fixed between the holding pole band / distribution band and the electric pole. It is a perspective view of a state in which a messenger wire is hung on the hanging part of the cable fixing bracket (circular cable pull-through bracket), and the optical drop cable from the 4th communication cable is stretched on the messenger wire via a spiral hanger. is there. It is a perspective view which shows the state which matched the cable fixing metal fitting (circular cable penetration metal fitting) with the cable retainer. The cable fixing metal fitting (circular cable drawing metal fitting) is made to correspond to the cable retainer, (a) is a plan view, (b) is a side view, and (c) is a front view. It is a perspective view of a cable retainer. A cable retainer is shown, (a) is a top view, (b) is a side view, (c) is a front view. It is a perspective view which shows the other Example of a cable retainer. The other Example of a cable retainer is shown, (a) is a top view, (b) is a side view, (c) is a front view. It explains the prior art, (a) is a perspective view in the case of using a free-type retaining column band and L-shaped hook metal fittings to be mounted on a utility pole, (b) is a carry-out device It is a perspective view at the time of replacing | exchanging to a pillar band or adding this taking-out apparatus pillar band.

P ... Electric pole K ... Optical drop cable M ... Messenger wire S ... Spiral hanger 1 ... Main unit 2 ... Cable retainer 3 ... Cable fixing bracket (circular cable through bracket)
4 ... Retention column band / distribution band 5 ... Recess 6 ... Mounting hole 7 ... Bolt 8 ... Nut 9 ... Scaffolding step band 10 ... Locking piece 11 ... Hole 12 ... Hook arm 13 ... Arc recess 14 ... Projection 15 ... Bolt insertion hole 16 ... Groove
17 ... Bolt
18 ... Nut
19 ... Hanging part

Claims (6)

This is a pinch-type cable detention method for fixing the cable attached to the utility pole. Insert the cable retainer into the band attached to the utility pole or the existing band, and bend the strip into a substantially L shape. The upper and lower ends of the vertical portion are formed on the upper side of the cable retainer having two upper and lower locking pieces corresponding to the vertical width of the band. the right and left engaging pieces are arranged to engage the upper end of the band, by tightening the band left and right locking pieces formed on the lower side is engaged with the lower end of the band, provided at the end of the horizontal portion Fixing the cable retainer from which the tip of the hook arm that retains and fixes the cable to the hole is formed; and
A rectangular plate piece is bent into a substantially L shape, a bolt insertion hole is provided in the vertical portion, and a tip portion of the horizontal portion is bent upward, and a groove portion is formed at the tip portion. Install a jig consisting of L-shaped bolts and nuts, and attach the cable fixing bracket (round cable pull-through bracket) that has a hanging part for hanging the messenger wire to face the cable retainer. And apply from the outside of the band,
Insert the bolt attached to the band into the bolt insertion hole of the cable fixing bracket (round cable passage bracket) and screw the nut into the cable retainer to fix the cable fixing bracket (round cable passage bracket). The process of putting the band between the cable retainer and the cable fixing bracket (round cable pull-through bracket),
The cable retainer can retain the strength of the cable retainer in the process of securing the cable with the allowable number of fixing strips that can maintain the strength, and the hanging part of the cable fixing bracket (circular cable pulling bracket). A pinch-type cable detention method characterized by having a step of fixing a fixed number of cables using a messenger wire . Fixing the cable to the hanging part of the cable fixing bracket (circular cable fitting) includes a process of hanging a messenger wire on the hanging part, and a process of stretching the cable to the messenger wire via a spiral hanger. The pinching type cable detention method according to claim 1 , comprising:   A pinch-type cable retaining device for fixing a cable attached to a utility pole, and a band attached to the utility pole, or a cable retainer inserted inside the existing attached band, and the cable retainer, Cable fixing brackets (round cable pull-through brackets) that are fixed by being applied from the outside of the band. The cable retainer bends the strip in a substantially L shape, and is attached to the left and right ends of the vertical portion. A pair of upper and lower locking pieces having a vertical distance corresponding to the vertical width of the band is projected, and the tip of the hook arm for retaining and fixing the cable protrudes into the hole provided at the tip of the horizontal portion. (Round cable fittings) are made by bending a rectangular plate piece into a substantially L shape and inserting bolts attached to a band into bolt insertion holes provided in a vertical portion. A cable-type cable retainer characterized in that a messenger wire is fastened with bolts and nuts to a groove formed in a portion formed by bending the tip of the horizontal portion upward and screwed to the cable retainer. apparatus. 4. The communication cable according to claim 3 , wherein the cable retainer has a locking piece extending over the entire joining portion of the vertical portion and the horizontal portion, and the locking piece includes a wedge-shaped protrusion facing downward. Pinch type retention device. Cable clamp (drawing-for round cable bracket) is slightly curved downward in the longitudinal direction of the both end portions of the square-shaped plate piece, according to claim 3 which is bent across plate piece substantially L-shaped Pinch type retention device for communication cables. Cable fixing brackets (round cable fittings) are bent with the tip of the horizontal part facing upward, and a groove is formed at the tip, and a jig consisting of an L-shaped bolt and nut is formed in the groove. The communication cable sandwiching and holding device according to claim 3 or 5 , further comprising a hanging portion for attaching and hanging a messenger wire.

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